#include<bits/stdc++.h>
using namespace std;
int main()
{
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    int n,r[100010],b[100010];
    cin>>n;
    int s=n;
    for(int i=1;i<=n;i++)
    {
        cin>>r[i];
        b[r[i]]++;
    }
    sort(r+1,r+n+1);
    for(int i=2;i<=n;i++)
    {
        if(r[i]!=r[i-1])
        {
            s-=min(b[r[i]],b[r[i-1]]);
        }
    }
    cout<<s;
    return 0;
}
